4 ms·
Surely any post-collapse society could just mine the cities for metals. And presumably with a much reduced population there would be plenty of arable land for
by kwhitefoot 3y ago
Surely any post-collapse society could just mine the cities for metals. And presumably with a much reduced population there would be plenty of arable land for growing oil bearing crops obviating the need for most fossil fuels.
- ramblenode 3y agoIt's disputed whether even modern ethanol production is energy-positive. But trying to start an entire biofuels production chain from scratch would certainly not be net positive, as you would need to already have mechanized agriculture and a petrochemical industry to get that efficiency. Coal liquefaction would probably be superior to biofuels, as it seems we will give up using it before it is depleted.